Dale, E. (1946). Audio-visual methods in teaching. Dryden Press.
Lua i Stíl Chicago (17ú heag.)Dale, Edgar. Audio-visual Methods in Teaching. New York: Dryden Press, 1946.
Lua MLA (8ú heag.)Dale, Edgar. Audio-visual Methods in Teaching. Dryden Press, 1946.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.